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Finding the Fourth Proportional to 558,709.88, 771,004.86 and 304,055.60

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Solution

The fourth proportional to 558,709.88, 771,004.86 and 304,055.60 is: 419,588.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,709.88 : 771,004.86 = 304,055.60 : x
  2. Step 2: Convert to fraction form
    558,709.88/771,004.86 = 304,055.60/x
  3. Step 3: Cross multiply
    558,709.88x = 771,004.86 × 304,055.60
  4. Step 4: Simplify right side
    558,709.88x = 234,428,345,310.22
  5. Step 5: Solve for x
    x = 234,428,345,310.22/558,709.88
  6. Step 6: Final answer
    x = 419,588.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.